Relay having two winding supports

© Start of patent period: 1976 04 15 Longest possible duration:

B Issued on: 1976 12 10

Inventor:

© dependence:

OE 333 882 © Pamphlets considered to delineate the state of the art:

- 2 -

Nr.333882

The invention relates to a relay with two winding carriers, which are arranged axially aligned on both sides of a support plate.

Such relays are often used in series arrangements application, that is, several relays are lined up next to each other using a common carrier plate. In this case, components of the magnetic paths and the electrical paths formed by contact sheets are often common to several or even all of these relays. Through plastic watches for the iron or rungs forming parts channels are formed, in which the windings must be used. It is known in this context, postpone self-supporting coils disposed within the channels winding support and to lock by gluing.

The object underlying the invention is to improve the manufacturing process of introducing the relay windings in the guide channels, which according to the invention is achieved in that the coil formed as a winding body with flanges carrying on the facing in the installation stage of the support plate flange fasteners, formed as projecting through recesses of the support plate pins or as in the installation stage, the pins of the other coil body clamping receiving slots are formed.

As essential to the invention is to be considered that except the insertion of the two axially aligned winding carrier in the corresponding guide channels and the successful in the course of this introduction fixing the two winding body to the support plate no further manufacturing step is necessary. In the known series arrangements of relays, however, a glue droplets must be applied to both sides of the support plate, which also must be done in view of the serious consequences of contamination of moving parts of the relay with adhesive with particular accuracy and care.

In addition to achieving a bobbin seat without additional fasteners or connecting means and the advantage of very easy to implement automation of assembly in the form of a plug-in, is to be regarded as particularly essential that no winding space loss occurs by attaching the winding body; the flanges of the winding body lie directly against the carrier plate. This total utilization of the guide channel for the wound body with wound coil contributes significantly to enabling the interchangeability of the known self-supporting coil with the coil used in the invention with bobbin. The additional space required by the bobbin can namely be compensated within certain limits by using wires without a heat-coagulation of the individual turns in the context of the construction of a self-supporting coil inducing thermoplastic sheath.

In this context, it is to be regarded as advantageous to use the winding carrier used for the known series arrangement of relays as roughly centering guide for the winding body. So it is a substantial interchangeability on the one hand, the self-supporting coils with the wound on bobbin coils and on the other hand, the bobbin with each other possible.

The joining of two winding carriers to a single relay or to a relay within a partially common components having row arrangement of relay is achieved according to an advantageous embodiment of the invention by providing an equal number of pins and shafts of Endflansche the winding body, wherein the distribution of the pins and shafts is such that a single embodiment the winding body allows the connection of two winding bodies together. This essential property can be achieved by a large number of different distributions, with a relatively small number of pins and sockets each having a diagonal arrangement of two similar fasteners can be preferred.

An exact and sustained solid connection of two winding bodies together can be achieved in particular when the shafts are aüsgehildet as sockets with circular cross-section, which have radial ribs. The dimensions of the ribs are chosen taking into account the material properties of the winding body flanges so that the ribs are plastically deformable upon insertion of the pins of the associated winding body.

Overall, the invention allows the structure of their windings arbitrarily combinable relay in a single manufacturing technology not very expensive step, with a largely independent of the tolerances of the support plate can be achieved by the floating mounting of the two winding body on the support plate.

The invention will be explained below with reference to an exemplary embodiment shown in the drawings, wherein FIG. 1 shows a longitudinal section through two^- Fig. 2 shows a cross section through the mounting plate in the region of a support plate connected.

The excitation windings of the relay shown in Fig.l are formed by the two coils -Spl and Sp2-, each on a winding body -W1 ​​or W2- with two flanges -Fll, F12 and F21,

F22 - are arranged. The flanges -F12 and F22- are the carriers of the terminal contact lugs -Kl and K2-, while the carrier plate -P - facing flanges - Fll or F21- are provided with pins -S- and sockets -B-, a locking of the two coils -Spl and Sp2- at the

Nr.333882

Enable carrier plate. To attach the coils -Spl and Sp2- the winding body -WI or W2- are pushed over the centering guides -Z-, so that in the recesses -A- the support plate -P- respectively the pin -S- a support flange, for example -F21-, and the bushing of the support flange -Fll- of each other bobbin -WI- face. By exerting a corresponding force in the direction of the axis of the two winding body -WI or W2- are the pins -S-, which have a certain excess in relation to the inside of the sockets -B- formed by the ribs -R- clear width, pressed in the sense of a clamping connection. The dimensions of the pins -S- on the one hand and the sockets -B- on the other hand are dimensioned so that a close concern of the flanges -Fll or F21- on the support plate -P- is guaranteed.

From Fig.2 it can be seen that each of the adjacent in the region of the support plates -P- flanges - of which only the flange -Fll- is visible - two bushings -B- and two pins -S- contains in a diagonal arrangement. Regardless of the position of the flanges -Fll- with respect to the centering guide -Z- so always meet the pin of a flange with the socket of the other flange together.